All Questions ⁺⁰237722 Questions

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1395

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+24

question

How long will it take a sample of radioactive substance to decay to half of its original amount, if it decays according to the function A(t)=550e^-0.158t, where t is the time in years? ROund to the nearest hundredth year.

johndoe Sep 6, 2016

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421

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Retirement fund

If I want 1.5 million dollars by the time in age 60 and I'm 15 now, how much do I have to save from age 15 to age 60

Guest Sep 6, 2016

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366

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math

Guest Sep 6, 2016

0

6637

1

+24

Suppose that ln2=a and ln5=b. Use properties of logarithms to write each log in terms of a and b. -> ln20

Suppose that ln2=a and ln5=b. Use properties of logarithms to write each log in terms of a and b. -> ln20

johndoe Sep 6, 2016

0

443

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Emily

6 1/2 pounds is how many grams

Guest Sep 6, 2016

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559

1

Eulers number question

Can someone help me with some formulas involving the constant e for the following problem: 2 Numbers keep increasing eachother by 30% of the current value of the other one.
Specific numbers: a=1000 and b=1300. A gets increased by read more ..

Guest Sep 6, 2016

0

648

0

+24

Change the exponential expression to an equivalent expression involving a logarithm. 32^4/5=16

Change the exponential expression to an equivalent expression involving a logarithm. 32^4/5=16

johndoe Sep 6, 2016

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447

1

Where did the 7 come from in 20/3=6.6666666666667?

Where did the 7 come from in 20/3=6.6666666666667?

Guest Sep 6, 2016

0

975

1

+24

Approximate the value using a calculator. Express answer rounded to three decimal places. 6^1.4

Approximate the value using a calculator. Express answer rounded to three decimal places. 6^1.4

johndoe Sep 6, 2016

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470

1

what is 2 times 2

what is 2 times 2

Guest Sep 6, 2016

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483

1

The courageous one

What's 76.65 million times 806.22 million equal?

Guest Sep 6, 2016

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584

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mathematic question

why do we have to solve math problems i'm a student not a therapist

Guest Sep 6, 2016

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965

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two-step equations

Guest Sep 6, 2016

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433

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nhdggggggggggggggggggg

Guest Sep 6, 2016

0

453

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nhdggggggggggggggggggg

Guest Sep 6, 2016

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431

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fraction and decimal

Guest Sep 6, 2016

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429

0

draw graph

how to draw graph like f(x)=x+1

Guest Sep 6, 2016

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402

1

Please help

the following unit rate in meters/second. (108 kilometers)/(2 hours) = ___ m/s ?

Guest Sep 6, 2016

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